The Shortfin Mako Shark • Scientific name: Isurus oxyrinchus • Fastest shark in the world: up to 50 mph • Largest brain to body ratios of all sharks • Average size: 10', 350 lb. • Weight Record: 1,300 lbs. • Length Record: 14' 6" • One of only four known warm-blooded sharks • 30 year lifespan | Mako Boats

Super weird and awesome lower jaw “shortfin mako” actually isurus oxyrinchus (desori) shark tooth found from these incredible Sand Mine ancient ocean floor and fossil layers at @palmettofossilexcursions we dug through last weekend searching for interesting fossils and shark teeth. This was definitely a keeper for @endlesssearch_! | SHRKco

A shark filmed swimming in the Adriatic Sea 😊🦈🦈 It is most likely a shortfin mako shark (Isurus oxyrinchus). Video credit: Michael Braun . . . . #Shark #AdriaticSea | Plitviceblog